Copyright © 2009 NEXCOM International Co., Ltd. All Rights Reserved.
18
Chapter 2: Jumpers and Connectors
NISE 3140, NISE 3140E, NISE 3140P2, NISE 3140P2E User Manual
COM1 (RS232) labelled “A“ on DB9 Cable Connector
DB44 Pin # DB9 Pin # Def. DB44 Pin # DB9 Pin # Def.
1 1 DCD1 2 2 RXD1
3 3 TXD1 4 4 DTR1
5 5 GND 6 6 DSR1
7 7 RTS1 8 8 CTS1
9 9 RI1 10 GND
COM2 (RS232) labelled “B“ on DB9 Cable Connector
DB44 Pin # DB9 Pin # Def. DB44 Pin # DB9 Pin # Def.
11 1 DCD2 12 2 RXD2
13 3 TXD2 14 4 DTR2
15 5 GND 16 6 DSR2
17 7 RTS2 18 8 CTS2
19 9 RI2 20 GND
COM3 (RS232) labelled “C“ on DB9 Cable Connector
DB44 Pin # DB9 Pin # Def. DB44 Pin # DB9 Pin # Def.
21 1 DCD3 22 2 RXD3
23 3 TXD3 24 4 DTR3
25 5 GND 26 6 DSR3
27 7 RTS3 28 8 CTS3
29 9 RI3 30 GND
COM2 (RS422) labelled “B“ on DB9 Cable Connector
DB44 Pin # DB9 Pin # Def. DB44 Pin # DB9 Pin # Def.
11 1 TXD- 12 2 TXD+
13 3 RXD+ 14 4 RXD-
15 5 GND 16 6 RTS-
17 7 RTS# 18 8 CTS+
19 9 CTS- 20 GND
COM4 (RS232) labelled “D“ on DB9 Cable Connector
DB44 Pin # DB9 Pin # Def. DB44 Pin # DB9 Pin # Def.
31 1 DCD4 32 2 RXD4
33 3 TXD4 34 4 DTR4
35 5 GND 36 6 DSR4
37 7 RTS4 38 8 CTS4
39 9 RI4 40 GND
41 NC 42 NC
43 NC 44 NC
Note: Pin 39 is defined as an external power source, which can be selected for 5V
or 12V using JP10.
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